Docstoc

Motor Carrier

Document Sample
Motor Carrier Powered By Docstoc
					Cross Border
Regional Truck
Transportation

NDDOT & UGPTI
Background
   Motor carrier restriction differences
    between states and provinces provide a
    less than optimum truck transportation
    system, resulting in higher costs, lost trade,
    and reduce revenues for producers,
    shippers, and motor carriers.
TransAction
Multi-jurisdictional Problem
Initiative 8
   “A  complex regulatory environment governs
    tire and axle loads, gross vehicle weights,
    vehicle heights and widths, trailer and semi
    trailer lengths, and combination vehicle
    lengths.”
Justification
   Businesses and carriers are directly affected by truck weight and
    size restrictions.
   Motor carriers, farmers, and businesses desire load restriction free
    roads for all season delivery of commodities and products.
   Seasonal and year-round road restrictions imposed by states, cities,
    and counties often result in increased costs through reduced
    payloads and extra trips for businesses.
   These restrictions often present confusion, frustration and additional
    costs for those trying to transport products within the state or region.
   In some cases, multiple permits may be needed for a single trip.
Estimated and Projected Average Daily Truck Traffic
                     (FHWA)
                                                                                          Estimated       Projected

I-94 Point A                                                            Year               1998       2010       2020
                   I-94 Point B                                         I-94
                                  I-94 Point C
                                                             Point A (near Billings)        800       1,156      1,522
                                         I-29 Point A        Point B (near Fargo)          1,801      2,344      2,860
                                         I-29 Point B        Point C (near St. Paul)       5,050      4,889      6,384
                                                                        I-29
                                                             Point A (near Grand Forks)    2,239      3,272      4,235
                                                             Point B (near Fargo)          2,308      3,358      4,333
                                              I-29 Point C   Point C (near Omaha)          2,780      3,934      4,938
                                                                        I-80
                                                             Point A (near Cheyenne)       8,827      12,828     17,037

 I-80 Point A   I-80 Point B   I-80 Point C                  Point B (near Lincoln)        6,619      10,211     13,483
                                                             Point C (near Des Moines)     7,238      10,469     13,647
Objectives
 Provide information of the differences in size and
 weight regulations in the region including:
 Alberta, Saskatchewan, Manitoba, North Dakota,
 South Dakota, Minnesota, Montana, Iowa,
 Wyoming, and Nebraska.

 Provide economic information resulting from the
 size and weight regulatory system,

 Provide information for the DOTs, policy makers,
 and others.
   Truck Size and Weight regulations in the
    study region are controlled and specified
    by:
     state  departments of transportation,
     provincial departments of roads,
     rural municipal councils,
     major urban transportation agencies,
     U.S. Department of Transportation,
     national parks,
     public works,
     tribal governments,
     other government agencies.
Regulations
   U.S. standards currently in place that provide wide spread
    application and influence in terms of basic limits
      U.S. Federal Truck Size and Weight Laws (Title 23),
             define size and weight regulations on the Interstate and National
              Network (NN).
        The Intermodal Surface Transportation Efficiency Act of 1991
         (ISTEA)
             restricts the operation of longer combination vehicles (LCV’s) on the
              Interstate System and commercial motor vehicle (CMV)
              combinations with two or more cargo carrying units on the NN to the
              types of vehicles in use on or before June 1, 1991.
             Section 1023 of the ISTEA
Canadian Regulations
  Roads
       and Transportation Association of Canada
  (RTAC) Weight Provisions.
      The RTAC weight provisions regulate principal highways
       throughout Canada. Basic differences between the two
       systems include:
      Basic RTAC limits are higher for tandem axle weights, tridem
       axle weights, and gross vehicle weights.
      The RTAC system is vehicle specific whereas the U.S.
       system is not.
      The RTAC system controls front steering axle loads (5500 kg
       or 12,125lbs. on tractors), and
      The RTAC system has no explicit bridge formula, whereas
       the U.S. system uses Bridge Formula B explicitly.
               Width 1    Length2   Height   Gross Vehicle    Maximum         Single    Tandem     Tridem     (**) “Routine”   “Routine” Permit    (**) Special
               (inches)                      Weight          Gross Vehicle     Axle      axle4      Axle          Permit          Maximum         Review Permit
                                             Interstate      Weight Other      (lbs)     (lbs)     (lbs) 15     Maximum          Single Axle /    Highest GVW
                                             Highways and     Highways16                                           GVW          Tandem Axle       with sufficient
                                             RTAC Routes       and non-                                            (lbs)                              axles
                                                                RTAC




North Dakota      102      110'      14'3       80,000         105,500        20,000    34,000     48,000       103,000        24,000/ 45,000       150,000

South Dakota      102      110'      14'        80,000        129,00012       20,000    34,000     43,000       116,000            31,000/        Determination
                                                                                                                                   52,000          on a case by
                                                                                                                                                    case basis

Minnesota        1025       75'     13'6"       80,000         80,00011      20,0007    34,000     43,000        92,0006           20,000/          144,000
                                                                                                                                   40,000

Montana           102      110'      14'        80,000         131,300        20,000    34,000     46,300       105,5008           20,000/          126,000
                                                                                                                                   48,000

Nebraska          102      105'     14'6"       80,000         95,000         20,000    34,000     42,500        99,000            20,000/          110,000
                                                                                                                                   40,000

Iowa              102      110'     13'6"      80,00014        80,000        20,000     34,000     42,500       100,000            20,000/          160,000
                                                                                                                                   40,000

Wyoming           102      110'      14'       80,00017        117,000        20,000    36,000     42,500        85,000        25,000/ 55,000       135,000

Manitoba          102       (*)     13'6"      87,08213        76,05913      20,06213   37,47713   52,9109      137,78813      20,062/ 37,478     Determination
                          114'9"/                                                                                              Determination       on a case by
                           75'5"                                                                                                on a case by        case basis
                                                                                                                                 case basis

Saskatchewan     10210      (*)     13'6"      87,08213        76,05913      20,06213   37,47713   52,9109      137,78813      20,062/ 37,478     Determination
                          114'9"/                                                                                              Determination       on a case by
                           75'5"                                                                                                on a case by        case basis
                                                                                                                                 case basis

   Alberta        102       82'     13'6"      87,08213        76,05913      20,06213   3747713    52,9109    139,99313        20,062/ 37,478     Determination
                                                                                                                               Determination       on a case by
                                                                                                                                on a case by        case basis
                                                                                                                                 case basis
Footnotes
   * In the Canadian Provinces of Saskatchewan and Manitoba, the first length (left) is the Roads
    and Transportation Association of Canada (RTAC) vehicle guideline. The second length (right) is
    the Non-RTAC vehicle guideline which includes a 5-axle truck-tractor and semi-trailer.

   ** “Routine” Permit GVW: is the highest weight a 5-axle unit can gross before special (other than
    routine) review and analysis of an individual movement is required. The Special Review Permit is
    the highest gross weight any unit with sufficient axles can gross before special review is required.

   1. Width limitation does not include special cases in certain States which allow moving farm
    machinery/equipment without permit during daylight hours.

   2. Maximum length any given configuration with exceptions for the following in which length
    limitations do not apply:
            a) building moving equipment
            b) emergency tow trucks towing disabled lawful combinations of vehicles to a nearby repair facility.
            c) vehicles and equipment owned and operated by the Armed Forces of the United States or the National
               Guard
            d) structural material of telephone, power, and telegraph companies.
            e) truck-mounted haystack moving equipment, provided such equipment does not exceed a length of 56
               feet
            f) safety and energy conservation devices and any additional length exclusive devices as determined by
              the highway patrol for the safe and efficient operation of commercial motor vehicles. Length exclusive
              devices are appurtenances at the front or rear of a commercial motor vehicle semitrailer or trailer, whose
              function is related to the safe and efficient operation of the semitrailer or trailer.
   3. The limitation does not apply to vehicles that are at most 15'6" high when all of the following
    apply: a) the vehicle is an implement of husbandry and is being moved by a resident farmer, rancher, dealer, or
              manufacturer.
            b) the trip is at most 60 miles.
            c) the trip is between sunrise and sunset.
            d) none of the trip is on an interstate highway.
Continued
   4. Axles spaced over 40 inches apart and less than 8 feet apart.
   5. Exclusive of rear view mirrors or temporary load securement devices that may extend an
    additional three inches on each side of the vehicle or load.
   6. Any vehicle combination with 5 or more axles with minimum spacings. Special permit over
    80,000 lbs.
   7. The value is for designated highways (interstates, U.S. highways. MN state truck highways and
    certain designated local highways). Weight limit for non-designated highways (all other streets
    and county roads within the state) is 18,000 pounds.
   8. Maximum allowable gross weight for vehicles operating under the Montana/Alberta
    Memorandum is 137,800 pounds.
   9. Tridem axle weights (RTAC A-train) depend on inter-axle spacing. (All weights converted from
    metric measurement which may include rounding error)
       52,910 pounds - 11'8" to 12'1"
       50,706 pounds - 9'8" to 11'8" (In Alberta maximum weight remains 52,910 at this axle spacing)
       46,297 pounds - 7'8" to 9'8"
   10. Width exceptions (house trailer during daylight hours only - 10'; mirrors may extend on each
    side of the vehicle and additional 8"; tie down or load securing devices may extend an additional
    4" on either side of the vehicle)
   11. Maximum gross vehicle weight on most city, county, and township roads is 73,280 lbs.
   12. The maximum is directly controlled by the Federal Bridge Formula. The maximum practical
    gross is 129,000 lbs, given the state’s length laws.
   13. Weight was converted from metric measurement which may include rounding error.
   14. 96,000 pounds for construction and livestock vehicles. Special permit issued for vehicles
    over 80,000 pounds.
   15. 9’ Spacing
   16. Maximum according to individual state trucking handbook weight tables with proper axles and
    spacing.
   17. Bridge Formula B used. With proper number of axles and spacing up to 117,000 lbs. can be
    moved on the interstate as well as       primary and secondary highways
                                                    Spring Load Restriction                                                  Winter Premium Weight
North Dakota                                single axle Tandem axle Tridem axle Gross Weight (unit: lbs)                   10% increase in GVW
               Class A Load Restrictions:      18,000      16,000     42,000     105,500
               No. 1 Load Restrictions:        15,000      15,000     36,000      80,000
               No. 2 Load Restrictions:        12,000      12,000     30,000      65,000
               Highway Restrictions      :     20,000      17,000      48,000    105,500
                * Values show Order 5, effective March 16, 7:00 AM.

South Dakota   The weight per axle may not exceed that allowed by the Load Restriction Map or addendum spring Load         No winter premium weight
               Restriction Reports.
               The maximum weight per axle shall be limited to the smallest of 20,000 pounds per axle or 450 pounds
               per inch width of tire.

Minnesota      The weight on any single axle shall not exceed 5 tons on a county highway, town road, or city street. The   10% increase in GVW
               gross weight on consecutive axles shall not exceed the gross weight allowed in restriction reports.

Montana        8 tons (16,000 pound) for a single axle                                                                     10% increase in GVW
               16 tons (32,000 pound) for tandem axle
               600 pound per inch of tire width for steering axle
               400 pound per inch of tire width for all other axles which have single tires
               The maximum weight allowed is determined by ton limit or pound per inch of tire width

Alberta        There are no restrictions on steering axles. However, drive, tandem, and tridem axles are limited to 90%,   Winter weights are based on
               75%, or 50% depending on thawing index calculations                                                         maximum gross weights on various
                                                                                                                           axle configurations, not a
                                                                                                                           percentage of gross vehicle weight

Manitoba       There are no restrictions to primary system or gravel roads. Steering axles are not restricted. For other   10% increase in GVW
               axles, there are two restriction levels:
               Level 1 Restriction (Beginning of thaw for 14 days): RTAC routes (90%of basic load), class A1 (90%of
               basic load), class B1(95% of basic load)
               Level 2 Restriction (Imposed 14 days after Level 1 and removed 1 week before removal of Level 1):
               class A1 (65% of basic load), class B1 (65% of basic load)

Saskatchewan   The maximum load on steering axles is 560 pound per inch, to a maximum of 6,060 pound on each               Winter weights are based on
               wheel or 12,120 pound on the steering axle. Maximum loads on all other wheels will be limited to 350        maximum gross weights on various
               pound per inch width of tire to a maximum loading of 3,636 pound per wheel.                                 axle configurations, not a
                                                                                                                           percentage of gross vehicle weight
Maximum Weights for Truck Tractor
and Two Trailing Units (LCV’s)*
*LCV is a RMD, Turnpike Double and RTAC A thru C trains.

        **Alberta                                                                   139,993
         Montana                                                                    137,8001
 **Saskatchewan                                                                     137,788
      **Manitoba                                                                    137,788
   South Dakota                                                                129,000
        Wyoming                                                           117,000
    North Dakota                                                     105,500
        Nebraska                                                 95,000
            Iowa    Not Allowed
       Minnesota Not Allowed

                    0    20,000 40,000      60,000 80,000 100,000 120,000 140,000 160,000
                                                 Weight (lbs.)
Maximum Weights for Truck Tractor and
Three Trailing Units (LCV’s)
** Weight was converted from metric measurement which may include rounding error.
(1) Uncapped weight limit. Bridge formula B is used to determine maximum weight allowed.


          Montana                                                                131,0601
    South Dakota                                                                129,000

         **Alberta                                                         117,947

  **Saskatchewan                                                           117,947

       **Manitoba                                                          117,947

     North Dakota                                                    105,500

         Nebraska    Empty

        Wyoming      Not Allowed

             Iowa    Not Allowed

        Minnesota    Not Allowed

                     0    20,000   40,000   60,000   80,000   100,000 120,000 140,000 160,000
                                                  Weight (lbs.)
Length for LCVs Truck Tractor and Two
  Trailing Units
(1) Overall maximum lengths for Canadian Provinces-Roads and Transportation Association of
    Canada (RTAC).
(2) Combined Trailer Length (CTL)
(3) Rocky Mountain Double configuration overall length. Turnpike Double maximum overall length is
    124' 6" in each Province
(4) In MN and IA, Twin 28’ trailers are allowed on designated highway network.


         North Dakota                                                            103' CTL2

           Alberta (1)                                                         101' 7''3
     Saskatchewan (1)                                                          101' 7'3
          Manitoba (1)                                                         101' 7''3

         South Dakota                                                          100' CTL2
             Montana                                                      95' CTL2
             Nebraska                                                     95' CTL2
            Wyoming                                                 81' CTL2

                Iowa     Not Allowed

            Minnesota    Not Allowed

                         0       20       40        60        80           100             120   140
                                                    Length (feet)
Maximum Length for LCVs Truck Tractor
and Three Trailing Units (Triples).
(1) Overall maximum lengths for Canadian Provinces-Roads and Transportation Association of
Canada (RTAC)
(2) Combined Trailer Length (CTL)

 Saskatchewan (1)                                                                       124' 6"

        Alberta (1)                                                              114' 9"

      Manitoba (1)                                                               114' 9"

     South Dakota                                                        100'

          Montana                                                        100'

      North Dakota                                                       100'

         Nebraska                                                      95'

         Wyoming      Not Allowed

             Iowa     Not Allowed

         Minnesota    Not Allowed

                      0       20        40         60        80        100        120         140
                                                  Length (feet)
                                                  Single Trip
                                                  permit time   Single Trip Oversize                                             Single Trip Oversize
State/Province   Single Trip                      available     Only                     Single Trip Overweight Only             and Overweight

                                                                                          150,001-160,000 lbs. $30 160,001-
                                                                                         170,000 lbs. $40 170,001-180,000 lbs
                 $20- Official receipt permit;                                               $50 180,001-190,000 lbs. $60
                                                                                         190,001 lbs and over $70 $.05 per ton
                      $10- Receipt issued                         $20 Up to- 14'6"       per mile is assessed upon the portion
                  "Interstate Only"; $5- Self                    Width; 15'6" Height;     of Gross Vehicle Weight exceeding
North Dakota        Issue "Interstate Only"         72 Hours        120' Length                     200,000 pounds.                      Varies

South Dakota       $15 Commercial Vehicle           72 Hours             $20                             $20
                                                                 $135 for width over
                                                                14'6" up to 16' during
                                                                    Spring Load
Minnesota                      $15                 120 Hours         Restrictions
                    $10 oversize permit fee
                   which also includes loads
Iowa               requiring bridge reviews         72 Hours

Nebraska                       $15                  72 Hours             $15                             $20                              $25
                                                                                         $3.50 for each 5,000lb increment
                                                                                         overweight moved up to 25 miles
                                                                                         that exceed axle limits. For
                                                                                         example, a load which is
                                                                                         10,000lbs over legal weight and
                   Single trip permit fee for
                                                                                         moved 95 miles would result in a
                  vehicles that do not exceed
                                                                                         $28 permit fee. 5,000lbs @
                          axle limits:                                                   $3.50 x 2 =10,000lbs =$7.00.
                            Under 100 Miles                                              95 miles is rounded to 100 miles.
                      $10 101-199 Miles                                                  $7.00 x 4 (4-25 mile increments
Montana            $30 Over 200 Miles $50           72 Hours             $10             are 100) =$28.

                    $20 single unit / $40
Wyoming                  Combination                96 Hours
                 Varies based on mileage and
Alberta               net weight factors            72 Hours

                    $18 or $.06 per kilometer
Manitoba         traveled, whichever is greater     24 Hours

                    $10 or $.06 per kilometer
Saskatchewan     traveled, whichever is greater     24 Hours
                                                   Annual Oversize
State/Province       Annual Oversize               and Overweight              Multiple Trip             Continuous Trip               Seasonal

North Dakota                                                                                                  N/A                     $50 per year
                                                                               $5 per month for each
                                                                              designated county, not                        $50 Custom Harvest Oversize Only.
                                                                              to exceed $20 for all of                          $75 Custom Harvest Permit
South Dakota                 $50                           N/A               the designated counties.         N/A                 (oversize/overweight).
                   $120 -Includes vehicles that
                   meet the following criteria:
                  Mobile cranes; Construction
                    equipment, machinery and
                 supplies; Manufactured homes;
                    Implements of husbandry;                                   Job Permit $36
                       Double-deck buses;
                                                   Varies from $200-          (fee increased if                            $60 -10% Winter Weight Increase,
                    Commercial boat hauling.
                  Implements of husbandry not       $800 (Limited              vehicle is also                               Sugar Beet, Potato, and Carrot
 Minnesota          exceeding 14' width =$24         commodities)               overweight)                   N/A                       harvest.

    Iowa                      $25                          $300                       $200                    N/A
                                                                                                                            $25 for 30 days; $50 for 60 days.
                                                                                                                           Renewable for 120 days per calendar
  Nebraska                                                                                                    $25                         year.

                 $75 for vehicles licensed in     Vehicles in excess of
  Montana                 Montana.                   the oversize/                                            N/A
                                                     overweight limts are
                                                    assigned the following
                                                             fees:
                                                   Up to but not exceeding
                                                   5,000lbs =$2001. Up to
                                                      but not exceeding
                                                  10,000lbs =$5001. Up to
                                                      but not exceeding
                                                  15,000lbs =$7501. Up to
                                                      but not exceeding
                                                     20,000lbs =$10002.

  Wyoming                                                                                                     N/A

   Alberta                                                                                                    N/A

  Manitoba                                                                                                    N/A

Saskatchewan                                                                                                  N/A
Single Trip Permit Costs by State and
Province
$25
      $20*            $20*
$20                               $18*
                                            $15*    $15*     $15*
$15
                                                                          $10*     $10*        $10*
$10

$5
                                                                                                             (*)
$0
                       a




                                                    a
                                                   ta
                                  ba
      g




                                                                                  na
                                                              a




                                                                                                       rta
                                                                      a




                                                                                           an
                     ot




                                                  ot



                                                            sk
    in




                                                 so




                                                                      w
                              i to




                                                                                ta
                  ak




                                                                                                     be
                                                ak
   m




                                                                                          ew
                                                                    Io
                                                          ra
                                              ne




                                                                              on
                            an
 yo



              D




                                              D




                                                                                                  Al
                                                        eb




                                                                                        ch
                                            in




                                                                             M
                           M
W



             th




                                           h



                                                        N




                                                                                      at
                                          M



                                         ut
          or




                                                                                    sk
                                       So
      N




                                                                                  Sa
    Footnotes for Permit Costs
   * Permit cost structures vary based on mileage, type of issue and configuration
      (i.e. “self issue”, “Interstate only”, “Overweight Only”, “Oversize Only”, etc.).
      The following is a list of exceptions and conditions in each State and Province:
     - Alberta permit costs vary based on mileage and net weight factors
     - Manitoba permit costs are $18 or $.06 per kilometer traveled, whichever is greater.
     - Saskatchewan permit costs are $10 or $.06 per kilometer traveled, whichever is greater.
     - Wyoming permit costs for combination vehicles are $40.
     - North Dakota permit costs are $10 for receipt issued “Interstate Only” and $5 for self issued
       “Interstate Only”. Single trip “Oversize Only” permits are $20 with dimensions up to 14'6"
        width, 15'6" height, and 120' length. Single trip “Overweight Only” permits are as follows:
          150,001-160,000 lbs. $30 160,001-170,000 lbs. $40 170,001-180,000 lbs. $50
          180,001-190,000 lbs. $60 190,000 lbs and over $70
          $.05 per ton mile is assessed upon the portion of Gross Vehicle Weight (GVW) exceeding 200,000 pounds .
      - Minnesota single trip “Oversize Only” permits are $135 for width over 14'6" up
        to 16' during spring load restrictions.
      - South Dakota single trip “Oversize Only” and “Overweight Only” permits are $20 each.
      - Nebraska single trip “Oversize Only” permits are $15, “Overweight Only” permits are $20, and
         single trip
        “Oversize and Overweight” permits are $25.
      - Iowa has a $10 permit fee which also includes loads requiring bridge reviews
      - Montana permit fees are $10 under 100 miles, $30 for 101-199 miles, and $50 over 200 miles
        for vehicles that do not exceed axle limits. An additional $3.50 for each 5000 lb.
        Increment overweight moved up to 25 miles is charged to vehicles that exceed axle weight limits
Single Trip Permit Time
Available by State and Province.
   Minnesota                                                120

    Wyoming                                          96

      Alberta                              72

     Montana                               72

        Iowa                               72

    Nebraska                               72

 South Dakota                              72

 North Dakota                              72

Saskatchewan             24

    Manitoba             24

                0   20        40   60           80   100   120    140
                                        Hours
Proposed Interregional Corridors

   The goal of corridor designation is “to
    proactively manage the important
    connections between regional centers in a
    more cost-effective manner”.
    The Statewide Interregional Corridor Study, MNDOT
    (http://www.oim.dot.state.mn.us/projects/irc/index.html)
 Center for Urban and Regional Affairs
  (CURA)
 Regional Trade Centers
     Population
     Number  of and Types of Business
     Rank 0-7
       0=largest
       7=smallest
Regional Trade Centers and Highways
Costs of Trucking
 Larger Trucks Provide Efficiency
 Less Traffic for Set Amount of Freight
 Less Road Damage May Result
 Regional Differences Restrict Payloads
 May Reduce Commerce
 Interstate GVW = 80,000
 RTAC GVW=137,800
Ton-Mile Costs for Different Truck Configurations
GVW (pounds)                 80,000     94,000    105,500     137,800
                          5 axle      6 axle     RMD        Turnpike
                                                             Double
Variable Costs
Fuel                        $0.0104    $0.0090    $0.0093     $0.0072
Labor                       $0.0126    $0.0100    $0.0097     $0.0067
Tires                       $0.0018    $0.0018    $0.0020     $0.0029
Maintenance                 $0.0043    $0.0038    $0.0040     $0.0034
Total Variable Costs        $0.0291    $0.0246    $0.0251     $0.0203
Fixed Costs
Equipment Cost              $0.0102    $0.0082    $0.0062     $0.0060
License Fees and Taxes      $0.0012    $0.0009    $0.0005     $0.0003
Insurance                   $0.0027    $0.0022    $0.0021     $0.0015
Management and Overhead     $0.0041    $0.0033    $0.0032     $0.0022
Total Fixed Costs           $0.0183    $0.0146    $0.0120     $0.0101
TOTAL COSTS                 $0.0473    $0.0392    $0.0371     $0.0304
Ratio of Payloads for Trucks Types
             5 Axle   6 Axle    RMD      Turnpike Double
             Semi     Semi


  Payload    53,200   65,700   67,900        97,800

   Tare      26,800   28,300   37,600        40,000
  Weight
   GVW       80,000   94,000   105,500      137,800

  Ratio of     1       1.23     1.28          1.84
  Payload
     Equivalent Single-Axle Loads*
                         Five Axle Tractor-Semitrailer




                                                                                                  Total
                          Weight (lbs)    12,000            34,000                       34,000            80,000
                          ESALS
                           Flexible       0.19              1.09                         1.09              2.37
                           Rigid          0.17              1.95                         1.95              4.07



                          Seven-Axle Rocky Mountain Double




                          Weight (lbs)                                                                            Total
                                    9,000          33,000                31,000        16,000             16,000 105,000
                          ESALS
                          Flexible 0.06            0.97                  0.75          0.62               0.62      3.02
                          Rigid      0.05          1.71                  1.31          0.60               0.60      4.27

* Structural number = 5; Slab thickness = 10; Terminal serviceability = 2.5
Source: Truck Weight Limits Issues and Options Special Report 225, Transportation Research Board/National Research Council
Washington, D.C. 1990
     Equivalent Single-Axle Loads*
                      Six-Axle Tractor-Semitrailer




                                                                                                            Total
                      Weight (lbs)
                         12,000               34,000                                      48,000            94,000
                      ESALS
                      Flexible 0.19                    1.09                                        0.83              2.11
                      Rigid     0.17                   1.95                                        1.68              3.80


                     Nine-Axle Turnpike Double




                      Weight (lbs)                                                                                          Total
                         12,000      34,000                   33,000          30,000               28,000            137,000
                      ESALS
                      Flexible 0.19         1.09                       0.97            0.66                 0.50            3.41
                      Rigid     0.17        1.95                       1.71            1.14                 0.85            5.82


* Structural number = 5; Slab thickness = 10; Terminal serviceability = 2.5
Source: Truck Weight Limits Issues and Options Special Report 225, Transportation Research Board/National Research Council
Washington, D.C. 1990
SAFETY
 Trucks and Accidents
 Statistics are a Problem
     Federal Motor Carrier Safety Administration
     National Highway Traffic Safety
      Administration
   Difficult to Build a Model
Safety Issues and Fatal Accident
Rates
   Studies conducted:
       TRB 1986; FHWA 1987; Jovanis et al. 1989;
            Found accident ratios for LCVs from 0.80 to 1.20 times that of
             tractor-semitrailers
            Did not have obvious methodological flaws

       Campbell et al. (1988)
            Showed 10% higher accident rate for LCVs
            Methodological flaws - doubles travel higher percentage on access
             controlled highways

       Stein and Jones (1988)
            Found accident ratios for LCVs from 2.5 to 3.0 times that of tractor-
             semitrailers
            Flaw – Undercounting the amount of doubles relative to tractor-
             semitrailers in their exposure population, resulting in inflated
             involvement rates of doubles to tractor-semitrailers
Data Sources for Roadway
Crashes
   Trucks Involved in Fatal Accidents (TIFA): All fatal
    accidents involving medium and heavy trucks (1993-
    2000)

    Fatality Analysis Reporting System (FARS): Database
    including information on all fatal motor vehicle crashes in
    the United States (1991-2001)

    Crash Files: Crash statistics for large trucks and buses
    involved in fatal and non-fatal crashes in the US (1993-
    2002). The Crash Profile defined a large truck as a truck
    with a GVW of 30,000 pound or higher
SUMMARY AND CONCULSIONS
   In the region, truck transportation offers advantages in
    terms of accessibility, flexibility, and door-to-door
    services
   Truck size and weight regulations are meant to promote
    safety, as well as prevent excessive wear and tear on
    highways and bridges. However, due to the
    inconsistencies in size and weight regulations, problems
    exist for seamless freight transportation
   This report provided a snap-shot of current regulations
    and conditions and the reader should note that vehicle
    size and weight laws are continually evolving depending
    on various scenarios
SUMMARY AND CONCULSIONS
   Because of the inconsistencies across state and
    provincial borders, it may be advantageous for policy
    makers and transportation departments in the region to
    work together to provide a uniform permitting system

   Results of the study provide inconclusive evidence
    between fatal crashes and weight regulation factors

   Cooperation among states, provinces, and government
    leaders is needed to bring about a plan for uniform
    regulations and seamless transportation
Thank you

				
DOCUMENT INFO
Shared By:
Categories:
Tags:
Stats:
views:5
posted:8/5/2011
language:English
pages:41